Bicycle



L MW e h S m e h S 2 N N K O M H T m ,d 0 M O m BICYCLE.

No. 474,400. Patented May 10, 1892.

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(No Model.) 2 Sheets-Sheet 2.

T. E. MOKENNA.

BICYCLE.

No. 474,400. Patented May 10,1892.

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PATENT OFFIcE.

NEWARK, NEIV JERSEY.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 474,400, dated May 10,1892.

Application filed January 23, 1892. Serial No. 418,995. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS E. MOKENNA, a citizen of the United States,and a resident of Newark, in the county of Essex and State of NewJersey, have invented certain new and useful Improvements in Bicycles,of which the following is a specification.

My invention relates to bicycles; and it consists of combinations ofdevices hereinafter described, and more particularly pointed out in theappended claims.

One form of my invention is shown in the accompanying drawings, formingpart of this specification, in which Figure 1 is a side elevation of acommon form of bicycle with my invention attached. Fig. 2 is a view,partly in section, of supplemental pedal mechanism; and Fig. 3 is adetail view.

Heretofore a chair for a child has been placed upon some bicycles, saidchair being supported from the tube supporting the usual saddle. Thereare objections to such construction, among them the danger of breakingthe supporting-rod, with resulting injury, mayhap fatal, to the child;also, the child is cramped and gets tired.

Among the objects of my invention are the safety and the healthyexercise of the child.

Referring to the drawings, references A B mark the front and rearwheels; U, the framing connecting said wheels, in this instance theso-called diamond frame; D, the backbone of said frame; E, the piecesupporting the goose-neck F, on which the saddle G is mounted; H, theusual sprocket-wheel, to the axle of which the pedals I I are attached,as usual; K, the sprocket-chain connecting the wheel Hwith thesprocket-wheelL on the axle of wheel B; M, the usual steering-head, towhich usual handle-bars N N are attached.

The parts thus far described are or may be of old construction.

In addition to the means for supporting the saddle G, the piece E shownis provded with two perforations, as 1 2, at about right angles to thetubular part in which the stem of goose-neck F is supported. In saidperforations 1 2 are fitted the bars 3 4, which are held in place byscrews 5 6, working in screwthreaded holes at right angles to said bars3 4. Screws 5 6 may be replaced by the usual polygonal-headedscrew-bolts. By these means bars 3, 4 may be adjusted or movedlongitudinally. Bars 3 4 carry a supporting block 7 at their forwardends, the bars entering sockets or perforations 8 9 and being heldtherein by suitable screws or screwbolts, as 10 11. Said block 7 isprovided with a hole 12, into which the goose-neck 13 fits, and whereinit is held by the screw-bolt 14, which works in a screw-threaded hole inpiece 7. The goose-neck 13 carries a saddle, as 15, for the child, thesaid saddle being of any usual or desirable construction. The piece '7may be provided with a hole 16, into which the supporting-rod 17 fitsand wherein it is held by a screw-bolt 18, working in a screw-threadedhole communicating with the hole 16. Said rod 17 is adapted to rest onand be supported by the backbone D, as by a shoe 19, concaved to fitsaid part D. By the above means the childs saddle may be adjusted as toheight and forward and backward relatively to the handle-barMand berigidly held in place.

In order to exercise the child while riding, I provide a suitable pedalmechanism and attach it to the framing of the bicycle in any suitableway, said pedals being placed relatively to the childs saddle, so thatthey are convenient for its feet. I prefer that this pedal mechanismshall be disconnectible from the main driving mechanism at will.

Referring to the drawings, and more particularly to Fig. 2, thereference numeral 20 marks the shaft from and by which the pedals 21 22are supported in a usual way by arms 23 24, fast to said shaft. The saidshaft 2t) is su pported by a sleeve 25, which is or may be integral withthe jaws, or one of them, by which it is held to the framing, as to thebackbone D. In the instance shown the sleeve 25 is in two parts, one ofwhich, as 26, is integral with the semicircular jaw 27 and the other, as28, is integral with the semicircular jaw 29. The jaws 27 29 fit uponthe circular backbone D and are clamped thereto by screws or screwbolts30 31, which pass through holes in jaw 29 and engage threaded holes injaw 27 or flanges of said jaws. Adjoining the outer end of sleeve 28 Iplace a collar 32 on said ICO shaft 20, and fasten the same thereto by apin, as 33, passing through holes in the collar and shaft. Adjoining theouter end of sleeve 26 I place a sprocket-wheel 34, preferably loose onshaft 20. Bolted to orintegral with wheel 34 is one member, as 35, of aclutch device. Outside said member 35 is the second member, as 36, (asleevein this case,) of said clutch device, said member 36 being movablelongitudinally, but not circumferentially, of the shaft 20, with whichit is connected by a spline 37 on the shaft engaging a groove, as 38, inthe member 36. The said spline 37 preferably abuts against the end faceof member 35, as this and the described relations of collar 32, sleeves26 28, and wheel 34 pre- Vent any endwise motion of shaft 20. I preferthat the clutch device shall have but one tooth 39 on one of themembers, as 36, and a corresponding notch or kerf 40 on the othermember, as 35. I also prefer that said tooth 39 and notch 40 shall notextend inward the whole way, so that the abutting of feather 37 againstthe face of member 35 will not be interfered with. The member 36 of theclutch may be moved by any suitable means to disconnect it from member35. The means shown consist of a ring 41 in a circumferential groove 42in member 36, a forked lever 43, pivoted, as at 44, its forks beingpivoted to ring 41, as at 45, and a link 46, pivotally attachedto lever43 and to lever 47. Said lever 47 is pivoted, as at 48, to an arm 49 ofthe sleeve 26 or jaw 27. Said arm extends out alongside lever 47 to nearthe end thereof and prevents accidental bending of the latter. An arm 50of said arm 49 extends at an angle thereto to near the member 36, and tothis arm 50 the lever 43 is pivoted, as at 44. Link 46 lies alongsidearm 50.

On the shaft of sprocket-wheel H, I place a sprocket-wheel 51, and Iconnect sprocketwheels 34 51 by a sprocket-chain 52. I prefer thatwheels 34 51 shall be of equal size and that they shall be of smallersize than wheel H. I also prefer that the arms for pedals 21 22 shall beshorter than the arms for pedals I I. I further prefer that the tooth 39and notch 40 shall be so placed that the arms of pedals 21 22 and ofpedals I I shall be parallel. The chain 52 may be of any suitableconstruction and should have means for opening it, as a screw-link,whereby it may be removed altogether. The childs saddle, the supportingdevices therefor, and the supplemental pedal mechanism are readilyremovable also, thus converting the bicycle into the ordinarysingle-rider machine.

I am aware that heretofore bicycles for carrying two riders have beenused. In said bicycles there are two sets of pedals, a sprocketwheelrigid with the forward set of pedals, two sprocket-wheels rigid with therear set, and a similar wheel on the axle of the rear groundwheel; also,a sprocket-chain connecting the sprocket-wheel of the forward set ofpedals with one of the wheels of the rear set and the usual chainconnecting the other of said wheels of the rear set with the rearground-wheel. There are two saddles; also, there is a steering-head andhandle-bars connected with the forward ground-wheel. Thereis also asteering-head and handle-bars adjacent the saddle for the rear rider anda bar connecting the said sets of handle-bars, so that they arecontrolled by either rider. Such machines are rather heavy for, and arenot so easily controlled by, a single rider. I do not claim such atandem bicycle as of my invention.

My invention may be applied to bicycles having other sorts of framesthan the diamond frame.

Numerous changes in the details maybe made without departing from myinvention.

IVhat I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a bicycle havinga handlebar, driving mechanism,and the usual saddle, of a pedal mechanism secured to the frame adjacentthe steering-head, sprocketwheels and chain connecting the same with thedriving mechanism, and a second saddle adjacent the said steering-head,substantially as and for the purposes described.

2. The combination, with a bicycle havinga handle-bar, drivingmechanism, and the usual saddle, of a pedal mechanism secured to theframe adjacent the steering-head, sprocketwheels and chain connectingthe same with the driving mechanism, a clutch connecting one of saidwheels with its shaft, and a second saddle adjacent the saidsteering-head, substantially as and for the purposes described.

3. In a bicycle, the combination of a pedalbearing shaft, a support inwhich it is journaled, a sprocket-wheel loose on said shaft, a chainconnecting said wheel with a sprocketwheel fast on the driving mechanismof the bicycle, and a clutch device connecting said loose wheel and saidshaft, substantially as and for the purposes described.

4. In a bicycle, the combination of a pedalbearing shaft, a support forsaid shaft, a loose sprocket-wheel on said shaft, a chain connectingsaid wheel with a sprocket-wheel fast on the driving mechanism, a clutchdevice connecting said wheel with said shaft, and lever mechanism fordisconnecting said clutch, substantially as and for the purposesdescribed.

5. In a bicycle, the combination of a pedalbearing shaft, a supporttherefor, a loose sprocketqvheel on the shaft, a chain connecting saidwheel with a sprocket-wheel fast to the driving mechanism, and a clutchdevice having a single point of engagement for connecting said loosewheel with the said shaft, substantially as and for the purposesdescribed. f

6. The combination of a shaft, a wheel loose thereon, a stationarysleeve or stop on one side of said wheel, a spline on the shaft abuttingagainst a smooth face of said wheel at the other side thereof, a groovedsleeve on said shaft and engaging said spline, and a clutch outside ofsaid spline, one part being on said sleeve and the other on said wheel,substantially as described.

7. The combination of a shaft, a bearing in which it is journaled, meansfor preventing endwise motion of said shaft in one direction, a wheelloose on said shaft and abutting against said bearing, a spline orfeather on said shaft, the end thereof abutting against a continuousface of said wheel, whereby said shaft is prevented from endwisemovement in the other direction, and a clutch outside the spline, onemember thereof being on said wheel, the other on said shaft, and havinga groove engaging said feather, substantially as and for the purposesdescribed.

8. In a bicycle, the combination, with the backbone and the bearing forsupporting the goose-neck or other saddle-support, said bearing havingtwo parallel perforations from front to rear, of two bars, one in eachof said perforations, means for rigidly retaining them therein, aperforated block on the forward ends of said bars, a supporting rod orbar in one of said perforations of said block and resting on thebackbone, a seat-support in another of said perforations, and meanssecuring said bars, support, and block rigidly together, substantiallyas and for the purposes described.

9. In a bicycle, the combination, with two rigid bars extending forwardfrom the usual saddle-supports, of a block rigidly secured on theforward ends thereof, two up-and-down perforations in said block, asupporting rod or bar in one of said perforations, said rod resting onthe backbone, a seat-supporting rod or bar in the other of saidperforations, and means for rigidly securing said rods in place,substantially as and for the purposes described.

10. Ina bicycle, the combination of support E, backbone D, rods or bars3 4, means for securing them to support E, block 7, means securing it torods 3 4, perforations 12 16 in said block, supporting-rod 17 inperforation 16 and having a shoe 19, resting on the backbone D,goose-neck 13 in perforation 12, a saddle, as 15, on the goose-neck, andmeans securin g supporting-rod 17 and goose-neck 13 to said block 7,substantially as and for the purposes described.

11. In abioycle, the combination of a pedalbearing shaft, as 20, abearing, as 26 28, therefor, a collar 32, fast to the shaft 20 andabutting against one end of the bearing, a sprocket-wheel 34, loose onsaid shaft and abutting against the other end of the bearing, a notch orkerf in the face of said wheel, a sleeve 36, having a groove 38 and atooth 39, a spline 37, abutting as described, and means for opening saidclutch, substantially as described.

Signed at New York, in the county of New York and State of NewYork, this11th day of January, A. D. 1892.

TIIOS. E. MOKENNA.

WVitnesses:

F. GooDWIN, R. W. BARKLEY.

